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Forum Post: RE: Problems with DSPLink on the OMAP-L138

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Hi Ramsey,

Thanks for the tips and do agree that is one of ways to work out.

I would like to chat with you a puzzle thing that bothers me. As we knew to use dsplink is to speed up some code in dsp core. However, my test code shows that is not a case.

I use scale sample and add time to measure the time  to scale 1024 float data in dsp and gpp(my process is omapl138).

The starting point of measurement from calling SCALE_Execute () at  SCALE_Main() in scale.c  and ending point of measurement is after SCALE_Execute() called , which takes 3392 us. The gpp does same scale data only takes 471 us.

Any idea why ggp processes faster than dsp core?

Thank you for taking look.

Joe


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